/Engine/Source/Runtime/InstallBundleManager/Public/InstallBundleUtils.h
Goes through this Session's RequiredBundles and loads data from disk for those bundles. Allows us to make sure we have full data in memory from disk without having to know the previous runs AnalyticsID to call StatsBegin on that bundle. NOTE: You should still call StatsBegin on the listed bundles before Starting/Incrementing/ETC any analytics! This just ensures that the previous run data exists for this given session!
virtual void LoadRequiredBundleDataFromDiskForSession ( const [FString](API\Runtime\Core\Containers\FString) & SessionName )